C++11 std::function callback and const qualifier

[geromueller]

This allows lambdas and other member functions to be passed to Search

[geromueller]

Hey! Done. I also added a check for a valid callback function.

[AlexVonB]

Thanks! One last thing that occured to me: could you please change the "tests" to use your new signature?

• https://github.com/nushoin/RTree/blob/master/Test.cpp#L45
• https://github.com/nushoin/RTree/blob/master/MemoryTest.cpp#L116
• https://github.com/nushoin/RTree/blob/master/TestBadData.cpp#L35

(PS: I am in no way associated with this repo, you are not obliged to listen to me 😅)

[nushoin]

@geromueller @AlexVonB since I'm not really maintaining this project anymore, would you like to have commit access and take the maintenance upon yourself?

[AlexVonB]

@nushoin I'd gladly help 👍

[nushoin]

@AlexVonB I added commit access for you and @geromueller , not sure if there are any other permissions that can be granted. Please contact me at oigevald (at the well known google mail service) if you need other permissions etc.

[AlexVonB]

I can close issues, delete comments and it looks like I could merge pull requests. Thank you!